LT1054 - 具有稳压器的带开关电容器电压转换器

LT1054是TI德州仪器公司的一款电荷泵（无感应器）产品，LT1054是具有稳压器的带开关电容器电压转换器，本站介绍了LT1054的封装应用图解、特点和优点、功能等，并给出了与LT1054相关的TI元器件型号供参考。

LT1054 - 具有稳压器的带开关电容器电压转换器 - 电荷泵（无感应器） - DC/DC开关稳压器 - 德州仪器

产品特性

Output Current, 100 mA
Low Loss, 1.1 V at 100 mA
Operating Range, 3.5 V to 15 V
Reference and Error Amplifier for Regulation
External Shutdown
External Oscillator Synchronization
Devices Can Be Paralleled
Pin-to-Pin Compatible With the LTC1044/7660

产品应用

Industrial Communications (RS232)
Data Acquisition Supply
Voltage Inverters
Voltage Regulators
Negative Voltage Doublers
Positive Voltage Doublers

产品说明

The LT1054 device is a bipolar, switched-capacitor voltage converter with regulator. It provides higher output current and significantly lower voltage losses than previously available converters. An adaptive-switch drive scheme optimizes efficiency over a wide range of output currents.

Total voltage drop at 100-mA output current typically is 1.1 V. This applies to the full supply-voltage range of 3.5 V to 15 V. Quiescent current typically is 2.5 mA.

The LT1054 also provides regulation, a feature previously not available in switched-capacitor voltage converters. By adding an external resistive divider, a regulated output can be obtained. This output is regulated against changes in both input voltage and output current. The LT1054 can also shut down by grounding the feedback terminal. Supply current in shutdown typically is 100 μA.

The internal oscillator of the LT1054 runs at a nominal frequency of 25 kHz. The oscillator terminal can be used to adjust the switching frequency or to externally synchronize the LT1054.

The LT1054C is characterized for operation over a free-air temperature range of 0°C to 70°C. The LT1054I is characterized for operation over a free-air temperature range of −40°C to 85°C.

产品器件信息

PART NUMBER	PACKAGE	BODY SIZE (NOM)
LT1054	PDIP (8)	9.50 mm × 6.35 mm
LT1054	SOIC (16)	10.30 mm × 10.30 mm

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